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Abstract
Three Schiff bases derived from 2,3-indolinedione (isatin) viz. isatinsemicarbazone (iscH), isatin thiosemicarbazone (itscH) and isatin-4-phenylthiosemi-carbazone (iptscH) were prepared. All the ligands are tridentate (ONO-, ONS-donor). The metal(II) complexes formed with Co, Ni, Cu, Zn and Cd, in 1:2 stoichio-metric ratio are octahedral and do not contain water molecules. From the results of chemical analysis, magnetic susceptibility measurements employing varying currents, ir, diffuse reflectance spectral and thermal studies, the coordinating properties of the ligands and structures of the complexes have been discussed.
